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U NITED STATES PATENT OFFICE.

PETER G. VAN WIE, OF CLEVELAND, OHIO, ASSIGNOR TO JOHN V. KENNEDY, OFSAME PLACE.

SPECIFICATION forming part of Letters Patent No. 432,100, dated July 15,1890.

Application filed October 23, 1889. Serial No. 327,947. (No model.)

' T aZZ whom it may concern:

Be it known that I, PETER G. VAN lVIE, a citizen of the United States,and a resident of Cleveland, county of Ouyahoga, and State of Ohio, haveinvented certain new and useful Improvements in Dope-Cups, of which thefollowing is a specification, the'principle of the invention beingherein explained, and the best mode in which I have contemplated aproplying that principle, so as to distinguish it from other inventions.

Myinvention relates to dope or grease cups; and it consists ofimprovements hereinafter described and claimed.

Referringto the drawings, Figure 1 isacentral vertical sectional viewtaken through the dope-cup. Fig. 2 is a view, partly in section andpartly in elevation,the piston being shown in raised position.

A is the cylindrical body portion of' the cup, threaded at its upperport-ion to engage with the threaded cover B, and provided at its lowerportion with the discharge-orifice a and with the opposite screws b,whose inner ends control the discharge area of said orifice. Saiddischarge area may be regulated by merely turning the screws in or out,as desired. The upper portion of said cover Bis provided with theupwardly-projecting threaded 3o portion 0, formed integral with thecover itself. Sleeve D has threaded engagement with said projectingportion C, and is provided with the thumb-levers d, by means of which itmay be threaded up or down said project- 3 5 ing portion. Said sleeve isfurther provided with a set-screw d, bymeans of which it may be securelyheld or locked in any desired position. Piston E, having a superficialarea practically equal to the cross-sectional area 0 of said cylindricalbody portion of the cup, is inserted within the cup, and is providedwith an annular rabbet e, in which is inserted the metallic spring-packin g F, that serves to make tight the joint between the cup andthe piston. Piston-rod G is formed integral with the piston and extendsupwardly through the usual central opening that is formed in the coverand also formed through the upwardlyprojecting threaded portion 0.Threaded onto the upper extremity of said piston-rod is the cap g, thatis of sufficient area to cover portion (1 and sleeve D. Spiral spring His located intermediate of cover B and piston E. The tension or pressureof said spring serves to force downwardly the piston, which in turncauses the grease to be forced out from the discharge-orifice of saidcup.

The operation of the cup is as follows: Let it be supposed that thepiston is in the position shown in Fig. 1 and that the spring isrelaxed, and that it is desired to fill the cup. Sleeve D is by means ofthe thumb-lever d turned upwardly on the projection portion 0, and as itis forced up it engages with cap g, that is secured to piston-rod G, andas a result the piston is brought into nearer position to the cover andthe spring is contracted and compressed until,finally, the piston andspring assume the position shown in Fig. 2, or the piston may be broughtinto even closer prox- 7o imity to the cover. The coveris now removedfrom the cup and the screws 1) are turned up until the proper area ofdischarge between the inner extremities of said screws is secured. Thecup is now filled with grease and the cover is again turned onto thecup. Sleeve D is now threaded down until its lower extremity engageswith the cover, as shown in Fig. 1. This permits the force of the springtobe exerted against the piston and the piston to be pressed against thegrease contained in the cup. This has a tendency gradually and slowly toforce the grease outwardly through the discharge-orifice as may beneoessary. The pressure of the spring will con- 8 5 tinue to be exerteduntil the piston is brought into engagement with the lower portion ofthe cup and the grease is entirely discharged.

The foregoing description and accompanying drawings set forth in detailmechanismin 9o embodiment of my invention. Change may be made thereinprovided the principles of construction respectively recited in thefollow ing claims are employed.

I therefore particularly point out and distinctly claim as myinvention 1. In a dope-cup, the combination of a cover provided withprojecting threaded portion C and having a central opening, a piston anda piston-rod, said piston-rod passing through said cover-opening, and athreaded sleeve D, engaging with the said projecting threaded portion ofsaid cover, also engaging with cap g; secured to said projectingthreaded portion and adapted to retain said piston in desired position,substantially as set forth.

2. In a dope-cup, the combination of a cover having a central openingand provided with a projecting threaded portion, a cap secured to itsupper extremity, a piston and a pistonrod, said piston-rod passingthrough said central opening, a spring located intermediate of saidcover and piston, said piston provided With a spring metallic packingand a threaded sleeve engagingwith saidproj ectiu g threaded I 5 portionof said cover and also engaging with the cap that is secured to theupper extremity of said piston-rod, substantially as set forth.

In testimony that I claim the foregoing to be my invention I havehereunto set my hand 20 this 30th day of July, A. D. 1889.

P. G. VAN WIE.

\Vitnesses:

J. B. FAY, E. E. PATE.

